CVE-2023-5391 Explained : Impact and Mitigation

This CVE-2023-5391 was assigned by Schneider Electric and was published on October 4, 2023. It pertains to a vulnerability that allows an attacker to execute arbitrary code on the targeted system by sending a specifically crafted packet to the application.

Understanding CVE-2023-5391

This vulnerability involves the deserialization of untrusted data, potentially leading to the execution of unauthorized code on the affected system.

What is CVE-2023-5391?

The CVE-2023-5391 vulnerability is classified as a CWE-502 issue, specifically related to the deserialization of untrusted data within the application.

The Impact of CVE-2023-5391

The impact of this vulnerability is severe, with a CVSS v3.1 base score of 9.8 out of 10, indicating a critical severity level. It has a high impact on confidentiality, integrity, and availability, posing a significant risk to the affected systems.

Technical Details of CVE-2023-5391

This section provides an overview of the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

The vulnerability allows an attacker to execute arbitrary code on the targeted system by manipulating the deserialization process through a specially crafted packet.

Affected Systems and Versions

The vulnerability affects Schneider Electric's EcoStruxure Power Monitoring Expert, EcoStruxure Power Operation (EPO) with Advanced Reports, and EcoStruxure Power SCADA Operation with Advanced Reports. All versions of these products are vulnerable before the application of Hotfix-145271.

Exploitation Mechanism

By sending a maliciously crafted packet to the application, an attacker can exploit the deserialization vulnerability, enabling the execution of unauthorized code on the system.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate action and ongoing security measures.

Immediate Steps to Take

Apply the recommended patches and updates provided by Schneider Electric.
Implement network security measures to restrict unauthorized access to the application.
Monitor network traffic for any suspicious activity that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update software and firmware to ensure the latest security patches are in place.
Conduct regular security assessments and penetration testing to identify and address potential vulnerabilities.
Educate users and system administrators on best practices for secure application usage.

Patching and Updates

Schneider Electric has released a hotfix (Hotfix-145271) to address this vulnerability. Users are advised to apply this hotfix promptly to mitigate the risk of exploitation.

Remember, proactive security measures and timely application of patches are crucial in safeguarding systems against potential threats.